Sheet-metal container



March 4, 1924. 1,485,995

H. J. SCHAFFER SHEET METAL CONTAINER Filed May 13, 1922 'INVENTOR b'E/VRK .1 SC/MFFH? TTORNEY had to the interior of the container.

Patented Mar. 4, 1924.

UNITED STATES HENRY J. SCHAFFER, OF BROOKLYN, NEW YORK, ASSIGNOR TO BROOKLYN, NEW YORK.

1,45,995 PATENT OFFICE.

moon scn'arnna, or

SHEET-METAL oon'rnmnn.

Application filed May 13, 1922. Serial No. 560,524.

To all whom it may concern Be it known that I, HENRY J. SCHAFFER, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Sheet-Metal Containers (Case A), of which the following is a full, clear, and exact description.

i This invention relates to sheet metal containers of the type which have a sliding enclosure and has for an object to provide an improved construction for such containers in which the use of solder and soldering operations for connecting the walls is eliminated; which has tight, strong and durable connections between the walls; in which binding or catching of the sliding door between the lateral wall and the flange of the end wall forming the trackway is prevented; in which the parts may be formed and connected with usual sheet metal working apparatus; and which is simple, rigid, attractive and inexpensive. Other. objects and advantages will be apparent from the following description of embodiments of the invention, and the novel features will be particularly pointed out in claims.

In the accompanying drawing:

Fig. 1 is a front elevation of a sheet metal bread and cake box constructedin accord-f ance with this invention;

Fig. 2 is a fragmentary sectional plan of the same, taken substantially along the line 2-2 of Fig. 1; r

Fig. 3 is a fragmentary sectional elevation of portions of an end and a side wall at an intermediate step in their assembly;

Fig. 4 is a similar view with the assembly -Jmpleted;

Fig. 5 is a view similar to Fig. 4, but showing a slight modification thereof; and

Fig. 6 is a similar view of a further modification of the invention.

The type of sheet metal container illustrated, is formed by a pair of shallow circular dish-shaped end walls 1 and 2 connected by a cylindrical lateral wall 3 having a section at one side omitted to form an opening or door 4 through which access mayRbe eferring articularly to Figs. 1 to 4, the lateral wall 3 is'provided along its up er and lower edges with a doubled back ange 5. The end wall 1 at its peripheral portion is flanged outwardly, then over and around the flanged edge 5 of thelateral wall, being brought against the outer face of the lateral wall and under the flange 5, then along the lateral wall a short distance, then offset as at 6 to form with the lateral wall a trackway 7 for guiding the upper edge of the slidable door 8. The extreme outer edge of the offset portion extends peripherally outward and is rolled as at9 to forma reinforcing flange which also eliminates or conceals the sharp edge of the sheet'of which the end wall is formed. The formationof the end wall over and around the flanged edge of the lateral wall firmly-anchors the lateral wall to the end wall without the'useof solder and provides atight and strong connection between these walls;

In the formation of the device,-the end wall 1 is stamped orv formed in a suitable manner, such as by diesior sheet metal working machinery, orboth, into the shape'shown in Fig. 3. The side wall?) is-then inserted into the innermost circular groove a as shown in Fig. 3, after which the outer wall of the groove in which the flanged edgeof the lateral wall is disposed, is forced inwardly against the outer surface of the side wall 3, as shown in Fig. 4. This may be accomplished byrunning the rib formed by the groove a between suitable rollers in sheet metal working machinery, or in any other suitable manner. The end wall 2 is provided with similar groovesand is attached to the lower edge of the lateralwall in the same manner. f y

Referring to Fig. 5, the upper edge of the lateral wall 3 is provided with an outwardly flared edge 10, over and around which the end wall 1 is formed in a manner similar to that described in connection with Figs. 1 to 4; The flared edge 10 of the lateral wall forms an anchoring flange with which the end wall interlocks to prevent separation thereof.

To avoid any danger of the edge of the slidable door wedging itself between the lateral wall and the exterior flange of the end wall which, with the lateral wall, forms the trackway, so as to cause binding or sticking of the door when being manipulated in the trackway, I may. provide the upper edge portion of the lateral wall 3 with a shoulder 11, as shown in Fig. 6, with the edge 1O flared or flanged outwardly in a manner similar to that shown in Fig. 5 or the lateral wall corresponding to the width g of the trackway to .be formed, and then eX- tends parallel with the lateral wall to complete the trackway, after which the edge extends outwardly and is rolled upon itself to form a finishing flange. The upper edge of the sliding door, therefore, abuts the upper wall of the trackway normally thereto, and there is no danger of the edge entering between the flange and the lateral wall to cause binding of the door.

It will, therefore, beobserv'ed that the use of solder and soldering operations in attaching the end and lateral walls together is eliminated. The same result is obtained by bending operations which may be performed readily with sheetmetal working machinery. It will be obvious that various changes in thedetails and arrangement of parts herein described and illustrated for the purpose of explaining the nature of the invention may be made by those skilled in the art within the principle and scope of the in- .vention.

I claim: I 1. In a sheet nietalcontainer, a wall having a flanged-end edge, and another wall having in its surface a doubled back rib portion embracing the flanged edge to anchor the wallstogether, and having a portion adjoining the first mentioned wall offset to form a trackway for guiding a sliding closure.

3. In a sheet metal container, a wall having an offset end edge portion terminating in a flange; and another wall having its peripheral portion formed over and around the flanged edge of the first mentionedwall, against the shoulder formed at the offset, and then offset to form a trackway for guiding a sliding closure. 7

4. In a sheet metal container, a wall having therein a shoulder adjacent to and spaced from an end edge, and another wall having its peripheral portion formed over and around the end edge of the first mentioned wall, and against the shoulder, the peripheral portion of the second mentioned wall then extending along the shoulder of the first mentioned wall substantially per pendicular to said wall and terminating in a flange portion extending substantially parallel with the said first mentioned wall to form therewith a trackway for guiding a sliding door.

5. In a sheet metal container, a wall having therein a shoulder adjacent to and spaced from a flanged end edge, another end wall having its peripheral portion formed over and around the flanged end edge of the first mentioned wall, and against the shoulder, the peripheral portion of the second mentioned wall then extending along the shoulder of the said first mentioned wall substantially perpendicular to said'wall and terminating in a flange portion extending substantially parallel with the said first mentioned wall to form therewith a trackway for guiding a sliding door.

In witness whereof, I hereunto subscribe my signature.

HENRY J. SOHAFFER. 

